• 제목/요약/키워드: Restoration Technology

검색결과 2,368건 처리시간 0.032초

경관훼손지의 생태적 복구방안에 관한 연구 (A Study on the Ecological Restoration Strategies for the Disturbed Landscapes)

  • 김남춘
    • 한국환경복원기술학회지
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    • 제1권1호
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    • pp.28-44
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    • 1998
  • This study was conducted to suggest the ecological restoration strategies for the disturbed landscapes by theoretical study. Especially, it is aimed to suggest three objectives for restoration by using native plants ; (1) prevention or reduction of wind and water erosion, (2) provision of food and cover for variety of animal species, (3) improvement of the visual or aesthetic quality of disturbed sites. The main results were summarized as follows. 1. Cooperation between restoration ecologists and restoration practitioners is needed to delineate a scientific approach to restoration ; (1) Being aware of published literature that describes similar work and/or establish general principles. (2) Preparedness to carry out proper experiments to test ideas. (3) Preparedness to monitor fundamental parameters in a restoration scheme. (4) Providing information about the behavior of species. (5) Publish results. 2. There are three models of succession in theories of plant succession. The tolerance and facilitation models were recommended to ecological restoration. The inhibition model applies in most secondary succession, but the actual species which are introduced first may inhibit the germination and growth of slower-growing species, or they may prevent the growth of other species whose propagules arrive later. 3. The objectives of erosion control, wildlife habitat provision, and visual quality improvement are not mutually exclusive. However, many revegetation practices in the past have emphasized one of these aspects at the expense of the others. 4. A native plant community can be the model of ecological restoration. By stylization/abstraction of native plant community, trying to learn the most essential characteristics of community types - environmental factors ; dominant, prevalent, and "visual essence" species composition - in order to use such information in restoration. 5. After developing mass/spaces plan, match plant communities to the mass/space plan. In utilizing community grouping, there needs aesthetic ability to understand design elements. 6. Several hydrophytes such as Pennisetum saccharifluous, Themeda triandra, Cirsium pendulum show relatively good germination rates. In case of mesophytes and xerophytes, Arundinella hina, Artemisia princeps, Oenothera odorata and legumes seem to have quick-germinating abilities at barren sites. Pinus thunbergii, Rhus chinensis, Evodia daniellii, Alnus firma and Albizzia julibrissin can be considered as "late succession" woody plants because they show low germinating rates and slow growing habitat. 7. The seeds used for restoration should be collected within a certain radius of where it will be planted. Consideration in genetic issues in the collection and use of germplasm can increase the odds for successful restoration efforts. 8. The useful model in the "drift" pattern occurs so abundantly in naturally evolving landscapes. As one species diminishes in density, a second or third species are increased. Thus, dynamic interactions between species are created. Careful using of "drift phenomenon" in planting was recommended. 9. Virtually no stand of vegetation today is immune from the introduction and/or spreading of exotic species. Therefore, the perpetuation of a restored sites requires conscious monitoring and management. Thus, management would be the most important process in ecological restoration. 10. In order to keep the sites "natural", alternative management strategies would be applied in management ; Atenative management strategies are decelerating successional process, accelerating successional processes or modifying species composition. As management tools, mechanical, chemical, biological or environmental factor manipulation, e.g., fire could be used.

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토양환경 정책 및 복원 기술-현황과 최근변화 (Policy of Soil Environment and Restoration Technology-Status and Recent Changes)

  • 장연수
    • 기술사
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    • 제41권3호
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    • pp.30-34
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    • 2008
  • Recently problems of soil and groundwater contamination occur in major construction sites of highway, dam and railways. Contaminants of oil fuels are also detected in the former fuel storage facilities of railroad station and army troops of transportation, etc. These facilities are planned as the sites of commercial infrastructures after restoration from pollutants by the law of soil environment conservation of Korea. In this manuscript, the contents of soil environment conservation law including soil assessment and restoration technology are introduced. Recent changes of soil environment area are also analyzed.

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지리산국립공원 반달가슴곰의 배설물을 통한 먹이원 분석 (Analysis of Asiatic Black Bear's foods by using Scats in the Jirisan National Park)

  • 정대호;서문홍;송동주;최은혜;이사현;이용학;조재운;송병철;양두하
    • 한국환경생태학회지
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    • 제30권5호
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    • pp.865-873
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    • 2016
  • 지리산국립공원 반달가슴곰은 2004년부터 러시아 연해주, 북한, 중국 동북부 일대와 서식지외 보전기관인 서울대공원에서의 재도입을 통해 복원사업을 진행하고 있다. 본 연구의 목적은 배설물을 통해 식이물을 분석하여 반달가슴곰의 먹이습성, 지리산국립공원에서의 먹이 자원 환경을 파악하기 위함이다. 2005년부터 2013년 사이에 무선 위치 모니터링이 가능한 반달가슴곰 배설물 78점을 채집하여 먹이원을 분석한 결과 상대출현빈도는 식물이 77%로 가장 높게 나타났고, 곤충 12.8%, 포유류 5.6%, 기타 3.6%, 조류 0.5%, 절지동물문 0.5%의 순이었다. 또한 수집한 배설물 중 건중량을 측정한 52점 대상으로 먹이 비(ratio)를 분석한 결과 식물이 91.2%로 가장 높게 나타났으며, 포유류 3.6%, 곤충류 1.0%, 기타 4.2%의 순이었다. 배설물을 통한 먹이원 분석 연구 결과 지리산에 서식하는 반달가슴곰은 잡식성이며, 동물성 먹이보다 식물성 먹이가 주 먹이원인 것으로 확인할 수 있었다.

마사토 비탈면의 생태복원 녹화기술 개발 연구 -자연표토복원공법의 적용사례를 중심으로- (Study on the Revesetation Technology for the Ecological Restoration of the Decomposed Granite Roadside Slopes -The Application of the Natural Topsoil Restoration Methods(NTRM)-)

  • 김남춘;강진형;이준우;남상준;이원한
    • 한국환경복원기술학회지
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    • 제4권3호
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    • pp.84-95
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    • 2001
  • This study was conducted to suggest the ecological restoration methods for the decomposed granite roadside cutslopes by Natural Topsoil Restoration Methods(NTRM). Four woody species, 3 shrub species, 4 native grasses, 8 wild flowers and 2 cool-season grasses were used. The experiment was conducted with the purpose of developing ecological restoration techniques by achieving following objectives for restoration by using native woody plants, shrubs, native plants and wild flowers; (1) prevention or reduction of wind and water erosion, (2) provision of food and cover for variety of animal species, (3) improvement of the visual or aesthetic quality of disturbed sites. The main results were summarized as follows. 1. Restoring naturalness to human-altered landscapes are important to protecting the worlds biodiversity. In this study, to restore or create an ecological community use as full a complement of native species as possible. Ecological restoration means returning a specific sites to its predisturbance condition. 2. Some species which are introduced first may inhibit the germination and growth of slower-growing species, or they may prevent the growth of other species whose propagules arrive later. In this study, cool season grasses was used small amount than native plants and woody species, because and Indigofera pseudo-tintoria grows well. Tall fescue and perennial ryegrass shows quick germination, but they could not inhibit the other species growing relatively slow. Pinus thunbergii used at Gonam near the ocean was suppressed by the other plants, so it can be concluded that using container seedlings is effective than seeding. 4. Ailanthus altissima, Albizzia julibrissin, Rhus chinensis Lespedeza cyrtobotrya, and Indigofera pseudo-tinctoria were germinated. In wild flowers, Coreopsis lanceolata, Dianthus sinensis, Coreopsis tinctoria, and Lotus corniculatus var. japonicus grew well and show enough plant height which will not suppressed by shrub and woody plants. After one year, native grasses such as Arundinella hirta, Miscanthus sinensis var. purpurascens and Imperata cylindrica var. koenigii cover the slopes well. 5. 25 herbaceous plants such as Trifolium repens, Arthraxon hispidus, Barbarea orthocerae, Potentilla fragarioides, Lepidium apetalum, Chenopodium album var. centrorubrum, Glycine soja, Rubus crataegifolius and 4 woody species such as Lespedeza maximowiczii, Robinia pseudoacacia, Symplocos Chinensis, Quercus acutissma were invaded. 6. Ecological restoration works by Natural Topsoil Restoration Methods for revegetation of the decomposed granite roadside cutslopes were successfully accomplished. It prevents surface water erosion and shows diverse vegetation structure. It will be successful to restore decomposed granite cutslopes.

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문화재 보존 및 복원에 사용되는 천연 광물성안료의 물성평가 - 석청(石靑)중심으로 (A Study on the Physical Properties of Natural Mineral Pigments Used in Restoration and Conservation of Cultural Asset - Focusing on Seokcheong)

  • 박주현;정혜영;고인희;정서린;조아현
    • 보존과학연구
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    • 통권36호
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    • pp.11-32
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    • 2015
  • 문화재 수리, 복원재료 및 회화용으로 사용되는 천연광물성 무기안료인 석청의 물리적 특성을 연구하였다. 본 연구를 위해 시중에서 유통되고 있는 청색계열의 안료(KA-한국, JA, JB, JC-일본, CA, CB, CC-중국)를 선정하였다. 연구에 앞서 XRD, XRF분석을 통하여 안료의 결정구조 및 조성을 확인하였으며, 본 연구에 사용된 안료는 Azurite가 주원료임이 확인되었다. 조성물을 확인한 안료는 입도, 색도, 비중, 흡유량 등 물리적 특성을 평가하였으며, 입도에 따른 물리적 특성의 변화를 확인하였다. 안료는 입도가 작아짐에 따라 명도는 커지고, 청색도는 커지다가 다시 작아지는 특성이 있으며, KA가 안료번호에 따라 가장 잘 분급되어 있음을 알 수 있었다. 비중은 입자크기가 커질수록 커지고, 흡유량은 입자크기가 작아질수록 커졌다. 이러한 결과를 토대로 안료의 기초적인 물리적 특성을 규명하고 나아가 문화재 수리, 복원에 선택적으로 사용하는데 도움이 될 것으로 기대한다.

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만경강 하천공간 복원이 생물다양성에 미치는 영향 (Effects of river space restoration on biodiversity in the Mankyung river)

  • 전호성;김규호;홍일;김지성
    • 한국수자원학회논문집
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    • 제52권spc2호
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    • pp.865-873
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    • 2019
  • 본 논문의 목적은 하천유역시스템의 다양한 기능을 고려한 하천공간 복원 프레임워크를 개발하고 적용하는 것이다. 특히, 하천공간 복원을 통한 수생태계 개선 효과를 정량화함으로써 지속가능한 하천유역관리 방향을 제시하고자 한다. 이를 위하여 하천유역의 기능 측면에서 현재의 문제점을 도출하고, 각 기능별 복원효과 평가를 위해 개별 성과지표와 연계한 하천공간 복원 프레임워크를 구축하였다. 하천공간 복원에 따른 생태적 영향은 에코톱 개념을 도입하여 개선효과를 정량적으로 분석하였다. 3가지 하천공간 복원 시나리오를 작성하여 복원 효과를 비교분석한 결과, 확대되는 공간에 배후습지 등 적절한 서식처를 조성하는 것이 생물다양성 확대에 유리한 결과를 나타내었다. 연중 수리 수문 특성과 연계한 에코톱의 다양성 평가는 하천공간 복원의 기대효과를 제시할 뿐만 아니라 성과평가를 위한 사업 후 모니터링의 기준이 될 것이다.

안양천 도시하천 복원의 실행과 평가에 관한 연구 (A Study on the Application and Assessment of Urban River Restoration in the Anyang River)

  • 이삼희;최정권
    • 한국환경복원기술학회지
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    • 제10권1호
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    • pp.1-8
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    • 2007
  • The Anyang River which located in an urban area near Seoul had been managed focusing on supplying home and industrial water and preventing floods, coping with rapid industrialization and urbanization. Consequently, it was changed into a deadly river during 25 years. Its channel was straightened by concrete and water quality deteriorated to BOD 190mg/l. In addition, water quantity has been rapidly decreased and has been drying up. Also, as the river ecosystem, landscape, water-friendly function, and so forth were seriously deteriorated, people turn away from the urban river. From 2001, the master plan under the 10-year has been actively carried out centering on the preceding items, which are healthy river in which fishes inhabit, safe river free from floods and droughts, and pleasant river where citizens visit. As a result, its water quality was remarkably improved by BOD 5mg/l in 2005 and some upper zones were improved enough to allow people to swim. Moreover, various animals including fish and birds gather around the river. Now, the 'Anyang River Restoration Project' is recognized as the first comprehensive and systematic nature-friendly urban river improvement in Korea.

치과용 CAD/CAM 전용 세라믹기반 하이브리드 레진 수복물의 변연 적합 연구 (A study on marginal fit of the ceramic-based hybrid resin restoration for dental CAD/CAM systems)

  • 정창섭;박종경
    • 대한치과기공학회지
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    • 제42권3호
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    • pp.228-233
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    • 2020
  • Purpose: This study aimed to assess and compare the marginal fit of ceramic-based hybrid resin restoration (HYB) and zirconia restoration (ZIR) for dental computer-aided design/computer-aided manufacturing systems. Methods: A stainless steel master model was produced. The impression was first made with silicone, and then stone working models were produced. A total of twenty restorations were fabricated with two different materials: ZIR and HYB. The silicone film thickness of the marginal gap was measured using a digital microscope; digital photos were taken at a magnification of ×160, and then analyzed using a measurement software. The values of the result were evaluated with the independent-sample t-test (α=0.05). All statistical analyses were performed with a statistical software. Results: The mean values for the marginal gap was 37.14±2.96 ㎛ for HYB, compared with 40.37±5.26 ㎛ for ZIR. No significant difference was found between ZIR and HYB (p=0.107). Conclusion: As a result, the marginal fit of the restoration fabricated using the hybrid resin was better than that of the restoration fabricated using zirconia. Also, the marginal fit of all groups was below the clinical acceptable range of 120 ㎛. Thus, HYB for dental CAD/CAM system in this study is expected to be suitable for clinical use in dentistry.

원식생 복원을 위한 산림표토내의 매토종자 적정 활용방안 연구 (The Study on the Utilization of Soil Seed Bank for the Restoration of Original Vegetation)

  • 김남춘;김호연;최미연
    • 한국환경복원기술학회지
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    • 제18권6호
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    • pp.201-214
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    • 2015
  • This study was conducted to identify forest topsoil's usefulness from July 2013 to Oct 2014. Generally, there are abundant seeds in topsoils and it can be used at restoration works. Mt. GARIWANG is famous for biodiversity in Korea. This study was aimed to find out the suitable utilization methods of natural topsoils for restoration works at sky-slopes construction sites. Test beds was made to identify suitable collecting times and suitable topsoil thickness. The main results are summarized as follows. First, Mt. GARIWANG have diverse species and in topsoils we can find lots of burried seeds which can be used at restoration works. Second, according to indoor experiment, as the depth of topsoil used thicker, the number of plants and coverage rates were increased. Also, there were no distinct differences in coverage rates between 5cm and 8cm thick topsoil plots and it can be possible to use at least 3cm thick topsoils even thou lower coverage rates. Third, as the results of research about indoor and outdoor experimental plots, there were difference in plant emergency. If we use the stabilizer to protect soil erosion, then we can get more increased results at sloped outdoor experimental plots. Fourth, based on environmental impact assessment, there was 389 species in whole region of Mt. GARIWANG. Through this seed bank experiments, we can find 23 varieties, including 4 tree varieties and 19 herbaceous varieties. We can find lots of native herbaceous species from topsoils. Fifth, this research was done at the specific area of Mt. GARIWANG and used limited topsoils. But we monitoring more longer periods, then there will be more useful outcomes. Finally by researching topsoils of Mt. GARIWANG, we can find diverse native plants. Thus, we must reuse natural topsoils of Mt. Gariwang for restoration of original vegetation.